removed unused namespaces

Dhileep4290 · Dhileep4290 · commit 6b96a949a07b · 2025-07-01T12:06:27.000+05:30
diff --git a/How-to/ViewPDFInWinforms/Program.cs b/How-to/ViewPDFInWinforms/Program.cs
@@ -1,7 +1,4 @@
 ﻿using System;
-using System.Collections.Generic;
-using System.Linq;
-using System.Threading.Tasks;
 using System.Windows.Forms;
 
 namespace ViewPDFInWinforms
